src/tools/miri/tests/fail/stacked_borrows/interior_mut1.rs

   1 use std::cell::UnsafeCell;
   2
   3 fn main() {
   4     unsafe {
   5         let c = &UnsafeCell::new(UnsafeCell::new(0));
   6         let inner_uniq = &mut *c.get();
   7         // stack: [c: SharedReadWrite, inner_uniq: Unique]
   8
   9         let inner_shr = &*inner_uniq; // adds a SharedReadWrite
  10         // stack: [c: SharedReadWrite, inner_uniq: Unique, inner_shr: SharedReadWrite]
  11
  12         *c.get() = UnsafeCell::new(1); // invalidates inner_shr
  13         // stack: [c: SharedReadWrite]
  14
  15         let _val = *inner_shr.get(); //~ ERROR: /retag .* tag does not exist in the borrow stack/
  16     }
  17 }